X-Git-Url: http://git.demorecorder.com/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fxcb_util.c;h=c14d9d5dd2fee26263f93042685547beea5d0661;hb=b672d1514c88e119f3aaeded8c8a488cad36db52;hp=3eab06a55010ae3ee466492319222122e776ddc4;hpb=a3bd6f4760b5b3f5f360a690920839646e2b9d06;p=free-sw%2Fxcb%2Flibxcb

diff --git a/src/xcb_util.c b/src/xcb_util.c
index 3eab06a..c14d9d5 100644
--- a/src/xcb_util.c
+++ b/src/xcb_util.c
@@ -27,20 +27,29 @@
 
 #include <assert.h>
 #include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <netinet/in.h>
+#include <limits.h>
 #ifdef DNETCONN
 #include <netdnet/dnetdb.h>
 #include <netdnet/dn.h>
 #endif
-#include <netdb.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stddef.h>
 #include <unistd.h>
 #include <string.h>
 
+#ifdef _WIN32
+#include "xcb_windefs.h"
+#else
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <fcntl.h>
+#include <netdb.h>
+#endif /* _WIN32 */
+
 #include "xcb.h"
 #include "xcbext.h"
 #include "xcbint.h"
@@ -49,98 +58,210 @@ static const int error_connection = 1;
 
 int xcb_popcount(uint32_t mask)
 {
-    unsigned long y;
+    uint32_t y;
     y = (mask >> 1) & 033333333333;
     y = mask - y - ((y >> 1) & 033333333333);
     return ((y + (y >> 3)) & 030707070707) % 077;
 }
 
-int xcb_parse_display(const char *name, char **host, int *displayp, int *screenp)
+int xcb_sumof(uint8_t *list, int len)
+{
+  int i, s = 0;
+  for(i=0; i<len; i++) {
+    s += *list;
+    list++;
+  }
+  return s;
+}
+
+static int _xcb_parse_display(const char *name, char **host, char **protocol,
+                      int *displayp, int *screenp)
 {
     int len, display, screen;
-    char *colon, *dot, *end;
+    char *slash, *colon, *dot, *end;
+
     if(!name || !*name)
         name = getenv("DISPLAY");
     if(!name)
         return 0;
+
+#ifdef HAVE_LAUNCHD
+    if(strncmp(name, "/tmp/launch", 11) == 0)
+        slash = NULL;
+    else
+#endif
+    slash = strrchr(name, '/');
+
+    if (slash) {
+        len = slash - name;
+        if (protocol) {
+            *protocol = malloc(len + 1);
+            if(!*protocol)
+                return 0;
+            memcpy(*protocol, name, len);
+            (*protocol)[len] = '\0';
+        }
+        name = slash + 1;
+    } else
+        if (protocol)
+            *protocol = NULL;
+
     colon = strrchr(name, ':');
     if(!colon)
-        return 0;
+        goto error_out;
     len = colon - name;
     ++colon;
     display = strtoul(colon, &dot, 10);
     if(dot == colon)
-        return 0;
+        goto error_out;
     if(*dot == '\0')
         screen = 0;
     else
     {
         if(*dot != '.')
-            return 0;
+            goto error_out;
         ++dot;
         screen = strtoul(dot, &end, 10);
         if(end == dot || *end != '\0')
-            return 0;
+            goto error_out;
     }
     /* At this point, the display string is fully parsed and valid, but
      * the caller's memory is untouched. */
 
     *host = malloc(len + 1);
     if(!*host)
-        return 0;
+        goto error_out;
     memcpy(*host, name, len);
     (*host)[len] = '\0';
     *displayp = display;
     if(screenp)
         *screenp = screen;
     return 1;
+
+error_out:
+    if (protocol) {
+        free(*protocol);
+        *protocol = NULL;
+    }
+
+    return 0;
+}
+
+int xcb_parse_display(const char *name, char **host, int *displayp,
+                             int *screenp)
+{
+    return _xcb_parse_display(name, host, NULL, displayp, screenp);
 }
 
-static int _xcb_open_tcp(const char *host, const unsigned short port);
-static int _xcb_open_unix(const char *file);
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port);
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file);
+#endif /* !WIN32 */
 #ifdef DNETCONN
-static int _xcb_open_decnet(const char *host, const unsigned short port);
+static int _xcb_open_decnet(const char *host, char *protocol, const unsigned short port);
+#endif
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen);
 #endif
 
-static int _xcb_open(const char *host, const int display)
+static int _xcb_open(const char *host, char *protocol, const int display)
 {
     int fd;
+    static const char unix_base[] = "/tmp/.X11-unix/X";
+    const char *base = unix_base;
+    size_t filelen;
+    char *file = NULL;
+    int actual_filelen;
+
+#ifdef HAVE_LAUNCHD
+        if(strncmp(host, "/tmp/launch", 11) == 0) {
+		base = host;
+		host = "";
+		protocol = NULL;
+        }
+#endif
 
-    if(*host)
+    if(*host || protocol)
     {
 #ifdef DNETCONN
-        if (strchr(host,  ':'))
+        /* DECnet displays have two colons, so _xcb_parse_display will have
+           left one at the end.  However, an IPv6 address can end with *two*
+           colons, so only treat this as a DECnet display if host ends with
+           exactly one colon. */
+        char *colon = strchr(host, ':');
+        if(colon && *(colon+1) == '\0')
         {
-            /* DECnet displays have two colons, so the parser will have left
-               one at the end */
-            char *dnethost = strdup(host);
-
-            dnethost[strlen(dnethost)-1] = '\0';
-            fd = _xcb_open_decnet(dnethost, display);
-            free(dnethost);
+            *colon = '\0';
+            return _xcb_open_decnet(host, protocol, display);
         }
         else
 #endif
-        {
-            /* display specifies TCP */
-            unsigned short port = X_TCP_PORT + display;
-            fd = _xcb_open_tcp(host, port);
-        }
+            if (protocol
+                || strcmp("unix",host)) { /* follow the old unix: rule */
+
+                /* display specifies TCP */
+                unsigned short port = X_TCP_PORT + display;
+                return _xcb_open_tcp(host, protocol, port);
+            }
     }
+
+#ifndef _WIN32
+    filelen = strlen(base) + 1 + sizeof(display) * 3 + 1;
+    file = malloc(filelen);
+    if(file == NULL)
+        return -1;
+
+    /* display specifies Unix socket */
+#ifdef HAVE_LAUNCHD
+    if(strncmp(base, "/tmp/launch", 11) == 0)
+        actual_filelen = snprintf(file, filelen, "%s:%d", base, display);
     else
+#endif
+        actual_filelen = snprintf(file, filelen, "%s%d", base, display);
+    if(actual_filelen < 0)
+    {
+        free(file);
+        return -1;
+    }
+    /* snprintf may truncate the file */
+    filelen = MIN(actual_filelen, filelen - 1);
+#ifdef HAVE_ABSTRACT_SOCKETS
+    fd = _xcb_open_abstract(protocol, file, filelen);
+    if (fd >= 0 || (errno != ENOENT && errno != ECONNREFUSED))
     {
-        /* display specifies Unix socket */
-        static const char base[] = "/tmp/.X11-unix/X";
-        char file[sizeof(base) + 20];
-        snprintf(file, sizeof(file), "%s%d", base, display);
-        fd = _xcb_open_unix(file);
+        free(file);
+        return fd;
     }
 
+#endif
+    fd = _xcb_open_unix(protocol, file);
+    free(file);
+
+    return fd;
+#endif /* !_WIN32 */
+    return -1; /* if control reaches here then something has gone wrong */
+}
+
+static int _xcb_socket(int family, int type, int proto)
+{
+    int fd;
+
+#ifdef SOCK_CLOEXEC
+    fd = socket(family, type | SOCK_CLOEXEC, proto);
+    if (fd == -1 && errno == EINVAL)
+#endif
+    {
+	fd = socket(family, type, proto);
+#ifndef _WIN32
+	if (fd >= 0)
+	    fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
+    }
     return fd;
 }
 
 #ifdef DNETCONN
-static int _xcb_open_decnet(const char *host, const unsigned short port)
+static int _xcb_open_decnet(const char *host, const char *protocol, const unsigned short port)
 {
     int fd;
     struct sockaddr_dn addr;
@@ -149,95 +270,192 @@ static int _xcb_open_decnet(const char *host, const unsigned short port)
 
     if(!nodeaddr)
         return -1;
+    if (protocol && strcmp("dnet",protocol))
+        return -1;
     addr.sdn_family = AF_DECnet;
 
     addr.sdn_add.a_len = nodeaddr->n_length;
     memcpy(addr.sdn_add.a_addr, nodeaddr->n_addr, addr.sdn_add.a_len);
 
-    sprintf((char *)addr.sdn_objname, "X$X%d", port);
-    addr.sdn_objnamel = strlen((char *)addr.sdn_objname);
+    addr.sdn_objnamel = sprintf((char *)addr.sdn_objname, "X$X%d", port);
+    if(addr.sdn_objnamel < 0)
+        return -1;
     addr.sdn_objnum = 0;
 
-    fd = socket(PF_DECnet, SOCK_STREAM, 0);
+    fd = _xcb_socket(PF_DECnet, SOCK_STREAM, 0);
     if(fd == -1)
         return -1;
 
     memset(&accessdata, 0, sizeof(accessdata));
-    sprintf((char*)accessdata.acc_acc, "%d", getuid());
-    accessdata.acc_accl = strlen((char *)accessdata.acc_acc);
+    accessdata.acc_accl = sprintf((char*)accessdata.acc_acc, "%d", getuid());
+    if(accessdata.acc_accl < 0)
+        return -1;
     setsockopt(fd, DNPROTO_NSP, SO_CONACCESS, &accessdata, sizeof(accessdata));
 
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
+    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
+        close(fd);
         return -1;
+    }
     return fd;
 }
 #endif
 
-static int _xcb_open_tcp(const char *host, const unsigned short port)
+static int _xcb_open_tcp(const char *host, char *protocol, const unsigned short port)
+{
+    int fd = -1;
+    struct addrinfo hints;
+    char service[6]; /* "65535" with the trailing '\0' */
+    struct addrinfo *results, *addr;
+    char *bracket;
+
+    if (protocol && strcmp("tcp",protocol) && strcmp("inet",protocol)
+#ifdef AF_INET6
+	         && strcmp("inet6",protocol)
+#endif
+	)
+        return -1;
+	
+    if (*host == '\0')
+	host = "localhost";
+
+    memset(&hints, 0, sizeof(hints));
+#ifdef AI_ADDRCONFIG
+    hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+#ifdef AI_NUMERICSERV
+    hints.ai_flags |= AI_NUMERICSERV;
+#endif
+    hints.ai_family = AF_UNSPEC;
+    hints.ai_socktype = SOCK_STREAM;
+
+#ifdef AF_INET6
+    /* Allow IPv6 addresses enclosed in brackets. */
+    if(host[0] == '[' && (bracket = strrchr(host, ']')) && bracket[1] == '\0')
+    {
+        *bracket = '\0';
+        ++host;
+        hints.ai_flags |= AI_NUMERICHOST;
+        hints.ai_family = AF_INET6;
+    }
+#endif
+
+    snprintf(service, sizeof(service), "%hu", port);
+    if(getaddrinfo(host, service, &hints, &results))
+        /* FIXME: use gai_strerror, and fill in error connection */
+        return -1;
+
+    for(addr = results; addr; addr = addr->ai_next)
+    {
+        fd = _xcb_socket(addr->ai_family, addr->ai_socktype, addr->ai_protocol);
+        if(fd >= 0) {
+            int on = 1;
+            setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
+	    setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &on, sizeof(on));
+
+            if (connect(fd, addr->ai_addr, addr->ai_addrlen) >= 0)
+                break;
+            close(fd);
+            fd = -1;
+        }
+    }
+    freeaddrinfo(results);
+    return fd;
+}
+
+#ifndef _WIN32
+static int _xcb_open_unix(char *protocol, const char *file)
 {
     int fd;
-    struct sockaddr_in addr;
-    struct hostent *hostaddr = gethostbyname(host);
-    if(!hostaddr)
+    struct sockaddr_un addr;
+
+    if (protocol && strcmp("unix",protocol))
         return -1;
-    addr.sin_family = AF_INET;
-    addr.sin_port = htons(port);
-    memcpy(&addr.sin_addr, hostaddr->h_addr_list[0], sizeof(addr.sin_addr));
 
-    fd = socket(PF_INET, SOCK_STREAM, 0);
+    strcpy(addr.sun_path, file);
+    addr.sun_family = AF_UNIX;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+    addr.sun_len = SUN_LEN(&addr);
+#endif
+    fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
     if(fd == -1)
         return -1;
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
+    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1) {
+        close(fd);
         return -1;
+    }
     return fd;
 }
+#endif /* !_WIN32 */
 
-static int _xcb_open_unix(const char *file)
+#ifdef HAVE_ABSTRACT_SOCKETS
+static int _xcb_open_abstract(char *protocol, const char *file, size_t filelen)
 {
     int fd;
-    struct sockaddr_un addr = { AF_UNIX };
-    strcpy(addr.sun_path, file);
+    struct sockaddr_un addr = {0};
+    socklen_t namelen;
 
-    fd = socket(AF_UNIX, SOCK_STREAM, 0);
-    if(fd == -1)
+    if (protocol && strcmp("unix",protocol))
         return -1;
-    if(connect(fd, (struct sockaddr *) &addr, sizeof(addr)) == -1)
+
+    strcpy(addr.sun_path + 1, file);
+    addr.sun_family = AF_UNIX;
+    namelen = offsetof(struct sockaddr_un, sun_path) + 1 + filelen;
+#ifdef HAVE_SOCKADDR_SUN_LEN
+    addr.sun_len = 1 + filelen;
+#endif
+    fd = _xcb_socket(AF_UNIX, SOCK_STREAM, 0);
+    if (fd == -1)
         return -1;
+    if (connect(fd, (struct sockaddr *) &addr, namelen) == -1) {
+        close(fd);
+        return -1;
+    }
     return fd;
 }
+#endif
 
 xcb_connection_t *xcb_connect(const char *displayname, int *screenp)
 {
-    int fd, display = 0;
-    char *host;
-    xcb_connection_t *c;
-    xcb_auth_info_t auth;
-
-    if(!xcb_parse_display(displayname, &host, &display, screenp))
-        return (xcb_connection_t *) &error_connection;
-    fd = _xcb_open(host, display);
-    free(host);
-    if(fd == -1)
-        return (xcb_connection_t *) &error_connection;
-
-    _xcb_get_auth_info(fd, &auth);
-    c = xcb_connect_to_fd(fd, &auth);
-    free(auth.name);
-    free(auth.data);
-    return c;
+    return xcb_connect_to_display_with_auth_info(displayname, NULL, screenp);
 }
 
 xcb_connection_t *xcb_connect_to_display_with_auth_info(const char *displayname, xcb_auth_info_t *auth, int *screenp)
 {
     int fd, display = 0;
-    char *host;
+    char *host = NULL;
+    char *protocol = NULL;
+    xcb_auth_info_t ourauth;
+    xcb_connection_t *c;
 
-    if(!xcb_parse_display(displayname, &host, &display, screenp))
-        return (xcb_connection_t *) &error_connection;
-    fd = _xcb_open(host, display);
-    free(host);
-    if(fd == -1)
-        return (xcb_connection_t *) &error_connection;
+    int parsed = _xcb_parse_display(displayname, &host, &protocol, &display, screenp);
+    
+    if(!parsed) {
+        c = (xcb_connection_t *) &error_connection;
+        goto out;
+    } else
+        fd = _xcb_open(host, protocol, display);
+
+    if(fd == -1) {
+        c = (xcb_connection_t *) &error_connection;
+        goto out;
+    }
+
+    if(auth) {
+        c = xcb_connect_to_fd(fd, auth);
+        goto out;
+    }
 
-    return xcb_connect_to_fd(fd, auth);
+    if(_xcb_get_auth_info(fd, &ourauth, display))
+    {
+        c = xcb_connect_to_fd(fd, &ourauth);
+        free(ourauth.name);
+        free(ourauth.data);
+    }
+    else
+        c = xcb_connect_to_fd(fd, 0);
+
+out:
+    free(host);
+    free(protocol);
+    return c;
 }